Nestable boat on a knock down plan

ABSTRACT

A nestable boat on a knock down plan comprising a bow, a minor body, a major body and a stern. These four members are individually floatable. The bow is juxtaposed with the stern and is adapted to be nested inside the minor body when the common axial line of the bow and the stern is arranged at an angle of 45* to the axial line of the minor body adapted to be nested inside the major body when the axial line of the former is arranged at a right angle to the axial line of the latter, and therefore, the telescoped boat is compact enough for transportation and storage.

United States Patent [191 Miya 1 Jan. 29, 1974 NESTABLE BOAT ON A KNOCK DOWN 2,040,373 5/1936 Green 9/2 s PLAN 3.400,414 9/1968 Masami Miya, Tokyo, Japan [75] Inventor:

[73] Assignee: Nepon Kabu'shiki Kaisha, Tokyo,

Japan [22] Filed: Nov. 22, 1972 [21] Appl. No.: 308,901

[30] Foreign Application Priority Data I Dec. 22, 1971 Japan 46420630 [52] U.S. Cl. 9/2 S [51] Int. Cl B63b 7/04 [58] 'Field of Search. 9/2 R, 2 S, l R, 6

[56] References Cited UNITED STATES PATENTS 2,650,376 9/1953 Sommer 9/2 S Windle 9/2 S Primary Examiner-Trygve M. Blix Attorney, Agent, or Firm-Blum, Moscovitz, Friedman & Kaplan [511 ABSTRACT A 'n'estable boaton a knock down plan comprising a bow, a minor body, a major body and a stern. These four members are individually floatable. The bow is juxtaposed with the stern and is adapted to be nested inside the minor body when the common axial line of the bow and the stern is arranged at an angle of 45 to the axial line of the minor body adapted to be nested inside the major'body when the axial line of the former is arranged at a right angle to the axial line of the latter, and therefore, the telescopedboat is compact enough for transportation and storage.

1 Claim, 5 Drawing Figures NESTABLE BOAT ON A KNOCK DOWN PLAN This invention relates to a nestable boat on a knock down plan.

A boat on a knock down plan comprising a bow, an amidship, and a stern has been known. In order to increase a complement of the boat, it is necessary to extend the amidship. In order to house the extended amidship, it is necessary to provide a correspondingly extended space. If the amidship is doubled, the housing space must be doubled, even if the amidship may be bisected into two parts having the same sizewith each other.

The primary object of this invention is to provide a nestable boat on a knock down plan comprising four member of a bow, a minor body, a major body and a stern, and wherein the bow, the minor body and the stern may be nested inside the major body so as to overcome the above-mentioned defect.

Briefly stated in accordance with one aspect of this invention, there is provided a nestable boat on a knock down plan comprising individually floatable four members including a bow, a minor body, a major body and a stern, and having a common axial line and the same width as one an'other. The bow and the stern are about horizontal, right-angled isosceles triangles and have lateral bulkheads as the bases of the triangles, respectively. The minor body is a horizontal, near square and has a front lateral bulkhead and an after lateral bulkhead. The bulkheads are somewhat longer than the axial length of the minor body. The diagonal line of the minor body is longer than the sum of the axial lengths of the bow and the stern. The major body is a horizontal rectangle having a front lateral bulkhead and an after lateral bulkhead. The bulkheads are shorter than the axial length of the major body. In addition, the bulkheads of the four members are provided with means to detachably unite any one of them with another one.

The invention will be better understood and other objects and additional advantages of the invention will become apparent upon perusal of the following description taken .in connection. with the drawings, in

which:

FIG. 1 is aplan view of a boat embodying this invention and assembled read'y for sea;

FIG. 2 is a plan view thereof disassembled and telescoped;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a plan view thereof assembled without uniting the major body; and

FIG. 5 is a plan view thereof assembled without uniting the minor body.

Similar numerals refer to similar parts throughout the several views.

Referring more particularly to the drawings, the preferred embodiment of this invention will now be described; however, this description will be understood to be illustrative of the invention and not as limiting it to the particular construction shown and described. A nestable boat on a knock down plan is provided, which is adapted to be disassembled into four member of a bow 11, a minor body 12, a major body 13 and a stem 14. The boat and the four members are symmetrical on a longitudinal axis. These members are provided with lateral bulkheads, of which the lengths are the width b of the boat. That is, the bow 11 is provided with a bulkhead 15. The minor body 12 is provided with a front bulkhead l6 and an after bulkhead 17. The major body 13 is provided with a front bulkhead l8 and an after bulkhead 19. The stem 14 is provided with a bulkhead 20. Thus these four members ll, l2, l3 and 14 are individually floatable, respectively.

The bow 1 l is about a horizontal, right-angled isosceles triangle and has the lateral bulkhead as the base triangle having the base integrated with a longer side of v a rectangle, as shown in FIGS. 1 and 2. The lateral bulkhead 15 is arranged as the other longer side of the rectangle. The length of the shorter side of the rectangle is limited as referred to hereinafter. The bow 11 may be formed in a gradually shallow draft frontward from a line 22. The bow 11 may have a shelter deck covering it entirely or partly.

The minor body 12 is a horizontal near square and has the lateral bulkheads 16 and 17. That is, the axial length or the horizontal length of the strake is somewhat shorter than the width b of the boat, while the horizontal length of the bulkheads 16and 17 is has described hereinbefore.

The major body 13 is a horizontal rectangle and has the lateral bulkheads 18 and 19 as the shorter sides thereof having the length b. The length-of the longer side of the rectangle is longer than b and limited only by requirement in size of the disassembled boat for transportation and storage.

The stem 14 is similarly formed to the bow and has the lateral bulkhead 20. Particularly, it is preferred that the vertex of the right-angled isosceles triangle is removed so as to form a trapezoid. It is necessary that the sum of the axial lengths of the bow 11 and the stern I4 is shorter than the length of the diagonal line of the minor body 13. The sum is varied depending upon the size of the rectangle of the bow 11.

Each bulkhead is provided with at least two openings correspondingly arranged to one another of the all bulkheads. There are provided three openings 23, 24 and 25 in the embodiment shown in FIG. 3 for integrating the four members. All bulkheads are arranged vertically and may have notches 26 in the tops thereof as shown in FIG. 3, respectively.

All strakes are inclined upwardly and slightly outwardly. I

To assemble the four members 11, 12, 13 and 14 into a boat as shown in FIG. 1, the bulkhead 15 of the bow 11 is united with the front bulkhead 16 of the minor body 12 by means of bolts and nuts 21, so as to join the bow 11 with the minor body 12. The after bulkhead 17 of the minor body 12 is united with the front bulkhead 18 of the major body'13 soas to join the minor body 12 with the major body 13. The after bulkhead 19 of the major body 13 is united with the bulkhead 20 of the stem 14 so as to join the major body 13 with the stem 14. The bolts are inserted through the two mated openings 23, 24 and 25 of the two bulkheads to be united and nuts 21 are screwed thereon, respectively.

It will be seen that the boat may be easily disassembled into the four members 11, 12, 13 and14 by unscrewing the nuts 21 and removing the bolts. Then the disassembled four members 11," 12, 13 and 14 may be nested as shown in FIGS. 2 and 3. At first the minor body 12 is housed inside the major body 13. It is possible to snugly fit the minor body 12 inside the major body 13 by arranging the former horizontally at the right angle to the latter and lowering the former inside the latter as shown in FIG. 2, because the strakes ofthe minor body 12 are shorter than the bulkheads 18 and 19 of the major body 13 and the bulkheads 16 and 17 of the minor body 12 are shorter than the strakes of the major body 13. Secondly the bow 11 and the stem 14 are placed inside the minor body 12 in such a manner that the bulkhead of the bow 11 is closely juxtaposed with the bulkhead 20 of the stem 14 and the common axial lineof the bow 11 and the stern 14 is arranged at the angle of 45 to the axial line of the minor body 12, as shown in FIG. 2. It is possible to arrange the bow 11 and the stern 14 as above, because they are horizontal, right-angled isosceles triangles and the length b of the bulkheads l5 and 20 is shorter than the diagonal line of the minor body 12. Thus the nested boat has a horizontal dimension of that of the major body 13 and a height substantially lower than three times of the height thereof.

By virtue of the above-described structure, it is possible to assemble, disassemble, put aside and load on a truck all alone. It is possible to transport the nested boat even on a station wagon.

If desired, it is also possible to assemble the boat without uniting the minor body 12 or the major body 13 with others, as shown in FIGS. 4 and 5.

While particular embodiments of the invention have been illustrated and described, modifications thereof will readily occur to those skilled in the art. It should be understood therefore that the invention is not limited to the particular arrangements disclosed but that the appended claims are intended to cover all modifications which do not depart from the true spirit and scope of the invention.

What is claimed as new and desired to be secured by Letters Patent of the United States is:

l. A boat having nestable sections and a longitudinal axis comprising a major body, a minor body, astern body and a bow body, each of said bodies having a means for releasably securing said bodies in alignment along said longitudinal axis, each of said bodies having a bottom wall and substantially upstanding side walls defining a well for floatation thereof, each of said bodies having a substantially equal lateral dimension, said major body having a lengthwise dimension larger than the lateral dimension of said bodies to form a housing for nesting said minor body therein, said minor body having a lengthwise dimension less than said lateral dimension to allow nesting thereof in the housing defined by said major body at an angle of from the longitudinal axis of said major body, said bow body side walls essentially defining a'trun'cated isosceles triangle cross section, and said stern body side walls essentially defining a truncated isosceles trapezoid cross section, said stern body, bow body and minor body being dimensioned such that said bow body and said stern body are nestable in a side by side relation in said minor body on an angle of 45 from the longitudinal axis thereof. 

1. A boat having nestable sections and a longitudinal axis comprising a major body, a minor body, a stern body and a bow body, each of said bodies having a means for releasably securing said bodies in alignment along said longitudinal axis, each of said bodies having a bottom wall and substantially upstanding side walls defining a well for floatation thereof, each of said bodies having a substantially equal lateral dimension, said major body having a lengthwise dimension larger than the lateral dimension of said bodies to form a housing for nesting said minor body therein, said minor body having a lengthwise dimension less than said lateral dimension to allow nesting thereof in the housing defined by said major body at an angle of 90* from the longitudinal axis of said major body, said bow body side walls essentially defining a truncated isosceles triangle cross section, and said stern body side walls essentially defining a truncated isosceles trapezoid cross section, said stern body, bow body and minor body being dimensioned such that said bow body and said stern body are nestable in a side by side relation in said minor body on an angle of 45* from the longitudinal axis thereof. 